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DBMS > Cassandra vs. OpenSearch vs. ScyllaDB

System Properties Comparison Cassandra vs. OpenSearch vs. ScyllaDB

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Editorial information provided by DB-Engines
NameCassandra  Xexclude from comparisonOpenSearch  Xexclude from comparisonScyllaDB  Xexclude from comparison
DescriptionWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessA distributed, RESTful search and analytics engine forked from Elasticsearch and based on Apache LuceneCassandra and DynamoDB compatible wide column store
Primary database modelWide column storeSearch engineWide column store
Secondary database modelsKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score116.31
Rank#12  Overall
#1  Wide column stores
Score10.44
Rank#48  Overall
#4  Search engines
Score5.33
Rank#77  Overall
#8  Wide column stores
Websitecassandra.apache.orggithub.com/­opensearch-project
opensearch.org
www.scylladb.com
Technical documentationcassandra.apache.org/­doc/­latestopensearch.org/­docs/­latestdocs.scylladb.com
DeveloperApache Software Foundation infoApache top level project, originally developped by FacebookAmazon Web ServicesScyllaDB
Initial release200820212015
Current release4.1.0, December 20222.2.0, August 2022ScyllaDB Open Source 5.0, July 2022
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache Version 2.0Open Source infoOpen Source (AGPL), commercial license available
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
  • Aiven for Apache Cassandra: Fully managed, open source NoSQL database specifically designed to be highly available, performant, and scalable.
  • Astra DB: Multi-cloud DBaaS built on Apache Cassandra.
Aiven for OpenSearch: Fully managed open source search and analytics suite including search engine, NoSQL document database, and visualization interface.Scylla Cloud: Create real-time applications that run at global scale with Scylla Cloud, the industry’s most powerful NoSQL DBaaS
Implementation languageJavaJavaC++
Server operating systemsBSD
Linux
OS X
Windows
All OS with a Java VMLinux
Data schemeschema-freeschema-free infoFlexible type definitions. Once a type is defined, it is persistentschema-free
Typing infopredefined data types such as float or dateyesyesyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nono
Secondary indexesrestricted infoonly equality queries, not always the best performing solutionyes infoAll search fields are automatically indexedyes infocluster global secondary indices
SQL infoSupport of SQLSQL-like SELECT, DML and DDL statements (CQL)SQL-like query languageSQL-like DML and DDL statements (CQL)
APIs and other access methodsProprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
Java API
RESTful HTTP/JSON API
Proprietary protocol (CQL) infocompatible with CQL (Cassandra Query Language, an SQL-like language)
RESTful HTTP API (DynamoDB compatible)
Thrift
Supported programming languagesC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby infoElasticsearch client
For CQL interface: C#, C++, Clojure, Erlang, Go, Haskell, Java, JavaScript, Node.js, Perl, PHP, Python, Ruby, Rust, Scala
For DynamoDB interface: .Net, ColdFusion, Erlang, Groovy, Java, JavaScript, Perl, PHP, Python, Ruby
Server-side scripts infoStored proceduresnoyesyes, Lua
Triggersyesyes infoby using the 'percolation' featureno
Partitioning methods infoMethods for storing different data on different nodesSharding infono "single point of failure"ShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infoRepresentation of geographical distribution of servers is possibleyesselectable replication factor infoRepresentation of geographical distribution of servers is possible
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Eventual Consistency infoSynchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, allEventual Consistency
Tunable Consistency infocan be individually decided for each write operation
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsnono infoAtomicity and isolation are supported for single operations
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes infoin-memory tables
User concepts infoAccess controlAccess rights for users can be defined per objectAccess rights for users can be defined per object
More information provided by the system vendor
CassandraOpenSearchScyllaDB
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
» more
ScyllaDB is a highly-available, highly-scalable, highly-performant NoSQL database....
» more
Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
» more
Highly-performant (efficiently utilizes full resources of a node and network; millions...
» more
Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
» more
AdTech ( AdGear , FullContact , Numberly , SAS , SteelHouse , Xandr) Customer Data...
» more
Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
» more
Comcast, Samsung, Medium, Disney+ Hotstar, Discord, Zillow, Grab, OlaCabs, Numberly,...
» more
Market metricsCassandra is used by 40% of the Fortune 100.
» more
Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
» more
ScyllaDB Open Source - free open source software (AGPL) ScyllaDB Enterprise - subscription-based...
» more
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We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services
3rd partiesInstaclustr: Hosted & Managed Apache Cassandra as a Service
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CData: Connect to Big Data & NoSQL through standard Drivers.
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DataStax Cassandra: Zero touch operations, configuration and management with true autoscaling
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Aiven for Apache Cassandra: A truly distributed database that can handle large volumes of writes.
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Aiven for OpenSearch comes with OpenSearch Dashboards included, giving a fully-featured user interface and visualization platform for your data.
» more

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
CassandraOpenSearchScyllaDB
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